1999 Oldsmobile Alero 90K miles:
Lower Intake manifold gasket (used the kit for the fix)
Water pump x2
Front brakes
Ignition switch. This is the switch that should have been a recall item, but mine broke.
Cruise control switch
Tail light (cracked and let water in, so I had actual blinker fluid).
Alternator (probably my fault for letting the car sit and cooked the alternator on a discharged battery).
Serpentine belt
Side mirrors (spring loaded and plastic broke)
Reglued on the rear view mirror and one trim piece.
All of the speakers
Window regulators x 5 (maybe 6?), because that's what power windows do.
Front right wheel speed sensor wiring. A lot of people mistakenly replace the wheel bearings on these cars, thinking that's the problem.
Some of the above I attribute more to old age than anything else